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science2023
| Question | Answer |
|---|---|
| What is graphing | Data represented visually |
| The_________ variable is the one being changed by the ecperimenter | independent |
| The_________ variable is changed by the result of the other variable | dependent |
| The independent variable is on the ____ axis | x |
| The dependent variable is always on the ___axis | y |
| when can you use a pie chart? | when you show how different parts fit in a whole. (ex. %) |
| What is the formula to find density? | d/mv or density=mass/volume |
| The scientific method- the first stem in the scientifi method is to do research and make an edcuated guess called a____________ | Hypothesis |
| After the first step of the scientific method you conduct an_____ | Hypothesis |
| After you analyze the results of an experiment, you make a ___________ | conclushion |
| What event caused Homer to be excited about rockets. | When he saw the rocket in the sky he knew what he wanted to do. |
| What were two problems Homer and his friends overcame to become successful. | the rockets kept exploading, and the nozzel kept melting. |
| What scientist was an insperation to homer? | Dr.Wernher Von Braun |
| The Big Bang is known as the __________ model of cosmology | standard |
| When did the universe begin? | 13.8 billion years ago |
| The early universe was about 75%__________and 25%_______ | hydrogen,hellium |
| Our solar system fromed when? | 4.6 billion years ago |
| What are the two big misonceptions about the big bang? | there was no explosion, and space began from a single point. |
| what are 4 major pices of evidence for the Big Bang theory | universal expansion,hydrogen,and hellium,background radiation,and the formation of galaxies |
| what makes up 99% of today's universe | hydrogen and hellium |
| what are clusters of stars as observed from earth called | conselation |
| The ____ maganitude is the actual amount of light given off by a star | absolute |
| The____ magnitude is how bright a star looks when seen from earth | apparent |
| How do scientist determine the distance of nearby stars? ____________ | parallax |
| What unit are the distances between stars and galaxies measured in? | light year |
| What indicates the temperature of a star? _______ | color |
| What process does the Sun go through to produce energy? | fusion |
| Which layer of the Sun gives off light? | photosphere |
| What is the largest layer of the Sun’s atmosphere called? ___ | corona |
| What are dark spots on the Sun’s surface called? _ | sunspots |
| Violent eruptions of plasma near dark spots are called? | flares |
| A graph that shows the relationship between a stars temperature and it’s absolute magnitude is called the _____________ diagram. | hertespung and russel |
| According to the H R diagram, where do stars spend most of their lives? ______________ | the main sequence |
| Where does fusion occur in a star? ____ | cores |
| Where do stars begin? ____________ | nebula |
| What stage follows the main sequence in an average star?_________ | giant |
| What is the stage when a star is glowing, hot and dense?_______ | main sequence |
| When supergiant stars explode they produce what? __________ | supernova |
| If light can not escape a star, the star must be what? ______________ | black hole |
| List the three types of galaxies | spiral,elliptical,irregular |
| Which galaxy do we live in? _________ | milky way |
| What type of galaxy is it? ___ | spiral |
| What is the main difference between the spacing of inner planets and outer planets _____________________________ | The inner planets are closer to the sun |
Created by:
SydneyBarry
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